This comes from when Wizards of the Coast was making test prints for the first English-language version of the Pokmon TCG
Obviously enough, because the Spy has evasion itself, you can turn it face up, crack in with it and get that Clue, which seems like a pretty normal play pattern
We all know how good counter target noncreature spell is in Commander, so Sapphire Dragon is a must-play, and the creature side is solid too
In general, you can expect art cards from popular series to carry more of a multiplier than those from in-universe Magic sets , since there's just a larger audience out there for this sort of collector's item
16 of the 150 cards, which have the holofoil design you can see above, were "Prism" cards